Warp beam and method of making



Dec. 27, 1938-. o. v. PAYNE WARP BEAM AND METHOD OF MAKING Filed Dec.24, 1935 2 Sheets-Sheet 1.

Dec. 27, 1938 o. v. PAYNE WARP BEAM AND METHOD OF MAKING Filed Dec. 24,1935 2 Sheets-Sheet 2 Inventor $CBX V. Payne Patented Dec. 27, 1938PATENT OFFICE WARP BEAM AND- DIETHOD OF MAKING Oscar V. Payne,Leicester, Mass, assignor to Gro'mpton & Knowles Loom Works, Worcester,

Mass, a corporation of Massachusetts Application December 24, 1935,Serial No. 56,041

4 Claims.

This invention relates to. improvements in warp beams for looms and it.is. the general object of the invention to provide a strong durable beamwhich. is of comparatively light weight because of its simpleconstruction.

Warp beams. ordinarily comprise a barrel having sliding warp. headsmovable to vary the width of. the warp space. It isan important objectof my present invention to form a warp head with two disks one of whichis perpendicular to the axisof thev beam and the other of which isdished orlconical, the two disksbeing secured together by a spacingsleeve and tapering toward each other from the barrel toward the outerrim. The sleeve prevents crushing of the flat disk by pressure. of theWarp and the conical disk. reinforces and strengthens the head because.of its shape.

In order to have some form of support for the barrel while it is beingwound and whenin the loom, it has been common practice to provide arelatively long cylindrical plug fitted into the end of the barrel andhaving a bearing stem extending outwardly from the barrel. I. have foundthat such a. construction is not only heavy but unnecessary, and it is afurther object of my invention to provide the gudgeon stem with a thinintegral flange welded to the interior of the barrel, the flange beingreinforced. with radial webs if desired. v

Itis a further. object of my invention to provide an. improved clamp tohold the head in adjusted position, preferably by means which permitfasteni'ng of the clamp to the beam in a way to allow slight radialadjustment, together, with means to, cause the clamp to grip the barrel.The two fastening means for the clamp can be tightened in desired order,the clamp being preferably centered on the barrel and then fastened, tothe dished or'conical disk.

Another object of my invention is the provision 'of' blocks Welded onthedished plate to receive the clamp screws. and located so as to place theaforesaid sleeve preparatory to welding thereof to, either disc. 7

It is still another object of my invention to form the barrel with asquare end so that it will receive either a friction headv bolteddirectly to the gudgeon flange, orthe' type of let-off shown lnmy priorPatent No. 1,803,143. In this way thebeam, when in the loom, can be usedwith two different types of let-off;

It is a stillv further object of my invention to provide an improvedmethod for assembling the warp head, the method involving the steps ofsecuring: the clamp bolt retaining: blocks. to. the

With these and other objects in view which will I appear as thedescription proceeds, my invention resides in the combination. andarrangement of parts set forth hereinafter. In the accompanying drawingswherein a convenient embodiment of my invention is set forth,

Fig. 1 is an elevation of one end of the beam, partly insection, showingthe preferred form of clamp.

Fig. 2 is a transverse section on a reduced scale, on line 2-2, Fig. 1,parts being omitted.

Fig. 3 is an end elevation in the direction of. arrow 3, Fig. 1, thegudgeon being in section,

Fig. l is a detail section on line 4'4 of Fig. 2,.

Figs. 5, 6 and 7 show successive steps in the method of. making the warphead,

Fig. 8 is a detail section on line 8-8, Fig. 2, on an enlarged scale,

Fig. 9 is a fragmentary plan view of the beam and beam head having amodified form of clamp, and

Fig. 10 is an endelevation of the clamp taken in the direction of arrowIll, Fig. 9.

Referring to the drawings, the beam barrel I0 is made preferably of pipeand has. its outer surface ground to present a smooth uniform surface tothe warp threads. Since both ends of the beam are alike but one end willbe described. A supporting gudgeon H, as shown-in Fig. 1, comprises astem I! turned to be true and receivable by'abearing either in. thewinding machine or the loom. A thin flange. l3. integral with. the stemhas its. periphery turned. on the gudgeon centers to fit the internaldiameter of the pipe. -By means of a jig not. shown the gudgeon axis isaligned with the, pipe axis, and in this position the flange is weldedto the interior surface of the barrel pipe. A beveled edge on theflange, indicated at M in Fig. 1, provides room for the welding metal.In this way the gudgeon is firmly secured tothe end of the pipe with itsaxis true with that of the pipe. The latter may then be turned about thegudgeon axes and given a true; smooth Warp receiving surface of desiredsize. Reinforcing integralradiating webs. l5. may project. from. theinner. surface of the. flange to the inner end l6 of the gudgeon, asshown in Fig. 1, thereby stiffening the flange and preventing bending ofthe same should the outer end of the stem be subjected to a severe blow.

When the beam is to be used in a 100m having an ordinary'frictionlet-off, a friction head 28 with a cylindrical shell 2! will beprovided. The

shell will have a polished surface 22 and will be formed with a web 23through which extends bolts 24. The bolts are tapped into the flange l3so that the friction head is tightly secured to the barrel. Thearrangement of the bolts and shape of the web 23 may be as shown in Fig.3. The friction head is formed with a shoulder is which fits closelyaround the end of the barrel to center The adjustable warp head 3!!forming an .im-'

portant part of my invention comprises a flat sheet metal disk 3! havingits outer periphery rolled or pressed as at 32 to receive the rim 33 ofa second disk 34 which may be dished ,or of general conical form. Thatpart of the disk 34 adjacent the barrel may be flattened to present aplanate portion 35 substantially perpendicular to the axis of thebarrel. The rim 33 is caught tightly by the edge 32 either by pressureor by Welding, as desired, and may also be flattened, as shown in Fig.l. a

In order to reinforce the two disks a cylin drical sleeve 49 isinterposed between the flange disk 3! and the flat part 35 of theconical disk; the sleeve having an internal diameter somewhat greaterthan the external diameter of the barrel. A pair of blocks 4! and 42 arewelded to the inner surface of the planate part 35 of the conical disk,and lie preferably against the sleeve. In this way the blocks locate thesleeve so that it is held spaced from the outer warp surface of thepipe. The disks 3i and 34 have aligned barrel receiving bores 45 asshown in Fig. 1.

The method of assembling the warp head is shown in Figs. 5, 6 and '7.The blocks 4| and 42 are welded to the planate part 35 of the conicaldisk one on each side of the bore 45, as shown in Fig. 5, with theirinner or adjacent faces 46 located equal distances from the axis of bore45, the faces i6 being separated by a distance substantially equal tothe outer diameter of the sleeve 40. The latter is then laid against theinner surface of fiat part 35 between the blocks to be positioned by thelatter, as seen in Fig. 6. The sleeve is then welded to the conicaldisk, as at 43, along the outer surface of the sleeve. Flat disk 39 isthen placed with its bore aligning with that of the other disk, the rims32 partly rolled,

.as shown in Fig. '7; The sleeveis then welded to the flat disk, alongan area lying between bore 45 and the sleeve, after which the rims arepressed tightly in place, as already described and shown in Fig.1. Thegreaterinternal diameter of the sleeve provides room for this last weld,and also keeps any roughness which might accompany If a different theweld from scratching the barrel as the warp head is adjusted.

The placing of the blocks is facilitated by an angular depression 41,one of the blocks. lying against an edge of the depression during theblock welding operation, as suggested in Fig. 8.

The depression also has a use to be set forth hereinafter.

.ening the bolt the clamp is released from the barrel so that it may beturned to facilitate sliding along the length of the barrel. The bolthead 56is adjacent the depression 41, the latter per.- mitting swingingof a wrench without interference by the conical disk 34.

The clamp is held-to the disk part 35 by a pair of screws 60. Each screwhas a threaded ,shank 6| which extends through a hole 62 in the clamp ofa somewhat larger diameter and is tapped into one of the blocks. A head63 on each screw is received by a'counter-bore 64 somewhat largerthanthe head. The reason'for the difference in size between the screw andthe hole 62 and counter-bore 64' is to permit slight relative movementof the clamp with respect to the axis of disk 34, thereby permitting theinternal bore 35 of the clamp to fit closely against the warp barrelunder slight tightening of bolt 54. When the screws 60 are tightened inplace they hold the clamp frictionally against the outer surface of theflat part 35 to prevent any lost motion or play between the clamp andthe warphead. Thereafter, bolt 54 is tightened and the clamp effectivelyholds the warp head to the beam barrel.

Inorder to provide the barrel with'a smooth surface the pipe of which itis constructed. is ground or turned down to size. If for any reason thepipe should be twisted there isthe likelihood that part of the barrelwill be thin. In such a case a clampsuc-h as that shown in' Fig. 2concentrates the pressure of 'the screw 54 at one point on the peripheryof the barrel and I have found in occasional instances that a slighteccentricity of the barrel results. In order to distribute the pressureincidental to tightening. the clamp over a larger area-I employ themodified form shown in Figs. 9 and 10. The modified clamp Ill may besimilar to the preferred form in all respects except the manner in whichthe head is split. In this instance instead of having the slot 53 cut ona plane radiating from the axis of the barrel I dispose the slotdiagonally as at H and provide a bolt 12 threaded into one of the clampheads 13 andabu'tting the other clamp head 14 as at "I5. I preferablymake the slot H a rather steep inclination so that the overlapping parts16 and T! of the heads 14 and i3. respectively, will extend around anappreciable part of the barrel circumference. In this way the pressureis not concentrated as in the form shown in Fig. 2 but is distributedwith the result that the eccentricity of the barrel due to the tightsetting of the clamp is very materially reduced. The modified form ofclamp will be set in a manner similar to that described in connectionwith the preferred form and will differ from the latter only in thedirection of the slot ll.

From the'foregoing it will beseen that I have provided a warp headformed of two disks the and having surfaces adjacent the axis located atouter rims of which are secured together by having one rolled over theother and the inner portions of which are held together by a sleevesecured to both disks and so located as to be out of engagement with thewarp surface of the barrel, thereby permitting longitudinal adjustmentwithout scratching the barrel.

It will also be seen that the gudgeon is formed with an integral fiangewhich fits into the end of the barrel and is welded around its peripheryto provide a strong bond. Also, it will be seen that the clamp is heldto the conical or dished disk by screws which pass through holes in theclamp large enough to permit a slight relative movement of the clamprelatively to the disk, and that the clamp is further provided with atightening bolt. The bolt can be used to eifect a partial tightening ofthe clamp so that the latter has a close fitting contact with the barrelsurface before the screws are tightened, the loose fit between thescrews and the clamp permitting the latter to find its center around thebarrel, after which the screws may be tightened to hold the clampagainst the conical disk. The bolt is subsequently tightened to hold theclamp against the barrel without unequal strain which might otherwisearise but for the relative movement of the clamp with respect to thescrews. Further, the blocks which receive the screws for the clamp servealso to position the sleeve which is secured to and reinforces the twodisks forming the warp edge. Again, the flange of the gudgeon providesthe beam barrel with a square end adapted for fitting either with thecommon letofi friction head or the positive let-off shown in myPatentNo. 1,803,143. Lastly, it will be seen that the advantages growing outof the construction of the warp head are attain-ed by following a methodof construction wherein blocks are secured to the conical disk toposition the sleeve, the latter being then welded to the conical disk,after which the flat disk is welded to the sleeve and then subjected toa rolling or pressing operation which will turn its rim over and aroundthe rim of the conical disk.

It will further be seen that the modified form of clamp has its headsseparated by a slot which extends diagonally with respect to the axis ofthe barrel, the purpose of this construction being to distribute thepressure of tightening the clamp over a comparatively large part of thecircumference of the barrel. With a clamp formed as shown particularlyin Figs. 9 and 10 the distortion of the shape of the barrel or itsdeviation from a true circle in cross section, is reduced to a minimum.While I have shown and described certain parts in connection with thefriction head 20, these parts are not claimed herein but are reservedfor a divisional application.

Having thus described my invention it will be seen that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. A warp beam head adjustable longitudinally along a hollow metallicbarrel comprising a disk forming part of the warp head, blocks securedto the disk on opposite sides of the barrel axis substantially equaldistances from the latter, a reinforcing sleeve secured to the disk andpositioned by said blocks, and a second disk for the warp head securedto the sleeve and also secured to the first disk, the internal diameterof the sleeve being greater than the external diameter of the barrel.

2. A warp beam head adjustable longitudinally along a hollow metallicbarrel comprising adisk with a conical portion forming part of the warpbeam head, blocks secured to the disk on opposite sides of the barrelaxis, part of the conical portion of the disk being recessed to positionone of the blocks, a clamp, means to secure the clamp to the blocks, andmeans accessible from a point adjacent the recessed part of the conicalportion to tighten the clamp on the barrel.

3. A warp beam head adjustable longitudinally along a hollow metallicbarrel comprising a warp thread engaging disk, a clamp secured to thedisk and surrounding the barrel, a pair of heads on the clamp havingsubstantially aligned axes which lie in a plane perpendicular to theaxis of the barrel, said heads being separated by a slot oblique withrespect to the head axes and lying in a plane transverse of the axis ofthe barrel, a portion of the circumferential periphery of the barrelbeing engaged by parts of both heads lying on opposite sides of saidslot, and means extending through the heads to clamp the same on thebarrel, said parts of the heads lying opposite the slot distributing thepressure of the clamp along said circumferential peripheral portion ofthe barrel.

4. A warp beam head adjustable longitudinally transverse to the axis ofthe barrel and diagonal with respect to the plane of the clamp, thoseportions of the heads lying on opposite sides of the slot extendingalong and in contact with a substantial circumferential area of thebarrel, and means to draw the heads together and force said clampagainst the barrel, the pressure of the heads against the barrel beingdistributed over a continuous circumferential zone of the barrelextending from one head to the other.

5. A warp beam head adjustable longitudinally along a hollow metallicbarrel comprising a warp thread engaging disk, a clamp secured to thedisk, said clamp having an internal surface to engage a completecircumferential zone of the barrel, a pair of heads formed on the clampseparated by a diagonal slot extending obliquely with respect to theplane of the clamp and the axis of the barrel, the internal portions ofthe heads opposite the diagonal slot extending along and in engagementwith the same Zone of the surface of the barrel measured around thecircumference of the latter, and means to draw the clamps together toforce the clamp against the barrel, the disposition of the internalsurfaces of the heads adjacent said slot distributing the pressure ofthe clampalong a circumferential area extending continuously from onehead to the other.

OSCAR V. PAYNE.

